1954-1955 Buick Super & Roadmaster Skylark & Century retro power brake booster & master cylinder assembly for cars that originally came equipped with power brakes. Mounts under drivers side floor as original. These units have proven to be a great alternative to the often unreliable and cranky treadle vac systems.  All of the change over brake lines and linkage are included. There is very little modification required for installation. A template and instructions are included as one hole will need to be drilled in existing bracket. These units are made upon request and will require up to a 10 day handling time before shipping. No Core is required!